问题
单项选择题
pH玻璃电极在使用时，必须浸泡24h左右，目的是( )。
A．消除内外水化胶层与干玻璃层之间的两个扩散电位
B．减小玻璃膜和试液间的相界电位E内
C．减小玻璃膜和内参比液间的相界电位E外
D．减小不对称电位，使其趋于一稳定值
答案
参考答案：D
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pH玻璃电极在使用时，必须浸泡24h左右，目的是( )。
A．消除内外水化胶层与干玻璃层之间的两个扩散电位
B．减小玻璃膜和试液间的相界电位E内
C．减小玻璃膜和内参比液间的相界电位E外
D．减小不对称电位，使其趋于一稳定值
参考答案：D
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